Magnetic Property of Verdazyl Radical Alloy, (p-CD_pOV)_<1-x> (p-BD_pOV)_x. Doping Effect of Magnetic Impurities on Quasi-One Dimensional Heisenberg Organic Ferromagnet (p-CD_pOV) and Antiferromagnet (p-BD_pOV) with S=1/2

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Abstract

The magnetic susceptiblities, ESR and powder X-ray patterns of verdazyl radical alloy, (p-CDpOV)<SUB>1-x</SUB>(p-BDpOV)<SUB>x</SUB> (x=ox 0--1 ), were measured to study the doping effects of magnetic impurities for the quasi-1D Heisenberg ferromagnet (p-CDpOV) and antiferromagnet (p-BDpOV) with S = 1/2, which have similar van der Waals radius to each other. The susceptibility curves systematically change with impurity concentration x. The most noticeable point is that the impurity effect is rather mild on the 1D ferromagnetic Heisenberg system. The characteristic feature of 1D ferromagnet still survives even in the heavily doped sample with x = 0.50. The positive Weiss constant (θ) and the ferromagnetic intrachain exchange interaction (2J<SUB>intrachain</SUB>) remain constant between x = 0 and 0.50. The results indicate that the p-BDpOV radical functions as an ideal dopant for the 1D ferromagnet, p-CDpOV. This is the first report of the effects of magnetic impurities on the quasi-1D ferromagnetic chain system.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 68(9), 3078-3085, 1999-09-15

    The Physical Society of Japan (JPS)

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Codes

  • NII Article ID (NAID)
    110001978799
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    00319015
  • NDL Article ID
    4905177
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  NDL  NII-ELS  J-STAGE 
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